Roll-up lithium-ion battery positive electrode recycling and processing device

Abstract

A wound lithium-ion battery positive electrode sheet recycling and processing device includes an unwinding assembly, a winding assembly, and a pulse assembly. The unwinding assembly is used to control the unwinding length of the positive electrode sheet to be processed, and the winding assembly is used to collect the processed positive electrode sheet. A high-voltage pulse zone is provided between the unwinding assembly and the winding assembly along the conveying direction of the positive electrode sheet. The pulse assembly is located in the high-voltage pulse zone and includes a first electrode plate and a second electrode plate. The first electrode plate and the second electrode plate are arranged at intervals along the width direction of the positive electrode sheet. Both the first electrode plate and the second electrode plate can move along the thickness direction perpendicular to the positive electrode sheet so that the first electrode plate and the second electrode plate selectively abut against the edge of the positive electrode sheet.

Description

Technical Field

[0001] This application relates to the field of retired lithium-ion battery recycling technology, for example to a wound lithium-ion battery positive electrode recycling and processing device. Background Technology

[0002] The positive electrode of a lithium-ion battery includes an aluminum foil with an active material layer on its surface. By recycling retired lithium-ion batteries, elements such as cobalt and lithium contained in the active material layer can be recovered. On the one hand, this can reduce excessive consumption of resources and environmental pollution. On the other hand, the separated cobalt and lithium can be used to manufacture new lithium-ion batteries, reducing the raw material cost of subsequent lithium-ion batteries.

[0003] High-voltage pulse discharge is a method for processing and recycling positive electrode sheets from lithium-ion batteries. Compared to hydrometallurgy, high-voltage pulse discharge reduces the use of chemical solvents. Currently, high-voltage pulse discharge requires cutting the complete positive electrode sheet into multiple smaller pieces. Each time, one small piece is fixed between the positive and negative electrodes of the device for high-voltage pulse processing. After processing, the small piece is removed and replaced with a new one to be processed. Only one small piece can be processed at a time, and the replacement process is time-consuming and inefficient. Summary of the Invention

[0004] This application provides a device for recycling and processing the positive electrode sheet of a wound lithium-ion battery, which can continuously perform high-voltage pulse processing on the positive electrode sheet of the wound lithium-ion battery, resulting in high processing efficiency.

[0005] This application provides a wound lithium-ion battery positive electrode sheet recycling and processing device, including an unwinding assembly, a winding assembly, and a pulse assembly. The unwinding assembly is used to control the unwinding length of the positive electrode sheet to be processed, and the winding assembly is used to collect the processed positive electrode sheet. A high-voltage pulse zone is provided between the unwinding assembly and the winding assembly along the conveying direction of the positive electrode sheet. The pulse assembly is disposed within the high-voltage pulse zone. The pulse assembly includes a first electrode plate and a second electrode plate, which are spaced apart along the width direction of the positive electrode sheet. Both the first electrode plate and the second electrode plate are movable along the thickness direction perpendicular to the positive electrode sheet, so that the first electrode plate and the second electrode plate selectively abut against the edge of the positive electrode sheet. Attached Figure Description

[0006] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0007] Figure 1 This is a front view schematic diagram of the wound lithium-ion battery positive electrode recycling and processing device described in the embodiments of this application.

[0008] Figure 2This is a top view schematic diagram of the wound lithium-ion battery positive electrode recycling and processing device described in the embodiments of this application.

[0009] Figure 3 This is a schematic diagram of the positive electrode sheet described in an embodiment of this application.

[0010] Figure 4 This is a schematic diagram of the punching assembly described in an embodiment of this application.

[0011] Figure 5 This is a schematic diagram of the punch described in an embodiment of this application.

[0012] Figure 6 This is a schematic diagram of a torn positive electrode sheet according to an embodiment of this application.

[0013] In the picture:

[0014] 100. Liquid medium;

[0015] 1. Unwinding assembly; 2. First guide roller; 3. Second guide roller; 4. Pulse assembly; 41. First electrode plate; 411. First clamping plate; 42. Second electrode plate; 421. Second clamping plate; 43. First electric push rod; 5. Spray assembly; 51. Spray nozzle; 52. Spray pipe; 53. Pump body; 54. Reversing valve; 6. Reaction tank; 61. Liquid outlet; 7. Punching assembly; 71. Punching platform; 72. Punch; 721. Mounting plate; 722. First blade assembly; 7221. First blade body; 723. Second blade assembly; 7231. Second blade body; 81. Electrode roll; 82. Positive electrode sheet; 821. Processing unit; 822. First through hole; 823. Second through hole. Detailed Implementation

[0016] To make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this application will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0017] In the description of this application, unless otherwise expressly specified, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0018] like Figure 1 and Figure 2 As shown, this application provides a winding lithium-ion battery positive electrode recycling and processing device (hereinafter referred to as the recycling and processing device), which can quickly process the positive electrode 82 of the winding lithium-ion battery. The positive electrode 82 of the winding lithium-ion battery is relatively long. After separating the positive electrode 82 and negative electrode of the retired lithium-ion core, the positive electrode 82 is then wound to obtain the electrode roll 81 to be processed. The recycling and processing device includes an unwinding assembly 1, a winding assembly, and a pulse assembly 4. The electrode roll 81 to be processed is placed in the unwinding assembly 1. The unwinding assembly 1 is used to control the unwinding length of the positive electrode 82 to be processed. The winding assembly is used to control the unwinding length of the positive electrode 82 to be processed. After collecting and processing the positive electrode sheet 82, a high-voltage pulse zone is provided between the unwinding assembly 1 and the winding assembly along the conveying direction of the positive electrode sheet 82. The pulse assembly 4 is located in the high-voltage pulse zone. The pulse assembly 4 includes a first electrode plate 41 and a second electrode plate 42. The first electrode plate 41 and the second electrode plate 42 are respectively connected to the positive and negative terminals of the power supply. The first electrode plate 41 and the second electrode plate 42 are arranged at intervals along the width direction of the positive electrode sheet 82. Both the first electrode plate 41 and the second electrode plate 42 can move along the direction perpendicular to the thickness of the positive electrode sheet 82 so that the first electrode plate 41 and the second electrode plate 42 selectively abut against the edge of the positive electrode sheet 82.

[0019] By setting up an unwinding assembly 1 and a winding assembly, the unwinding assembly 1 and the winding assembly can work together to transport the positive electrode sheet 82, so that each area of ​​the positive electrode sheet 82 enters the high-voltage pulse zone for high-voltage pulse operation in sequence. In this embodiment, the positive electrode sheet 82 of the recycled retired lithium-ion battery includes aluminum foil, and active material layers are provided on both sides of the aluminum foil. The active material layers contain elements such as cobalt. The high-voltage pulse can separate the aluminum foil from the active material layers, realizing the separation and recycling of lithium materials from cobalt and other materials. By setting up a first electrode plate 41 and a second electrode plate 42 that can move along the direction perpendicular to the thickness of the positive electrode sheet 82, the first electrode plate 41 and the second electrode plate 42 can press against the edge of the positive electrode sheet 82. When the first electrode plate 41 and the second electrode plate 42 are both pressed against the edge of the positive electrode sheet 82, the first electrode plate 41 and the second electrode plate 42 are powered on, and the high-voltage pulse current can flow into the positive electrode sheet 82, so that the active material layer on the positive electrode sheet 82 can be connected to the positive electrode sheet 82. Aluminum foil separation enables the separation and recycling of lithium materials from other materials such as cobalt. It is understood that, under constant voltage, the smaller the resistance in the circuit, the larger the current. In this embodiment, the first electrode plate 41 and the second electrode plate 42 are arranged at intervals along the width direction of the positive electrode sheet 82. The resistance in the circuit is smallest along the straight line connecting the first electrode plate 41 and the second electrode plate 42, i.e., along the width direction of the positive electrode sheet 82. Therefore, most of the current flows along the width direction of the positive electrode sheet 82 to the opposite electrode plate, resulting in less energy loss. After the high-voltage pulse operation is completed, the first electrode plate 41 and the second electrode plate 42 can be driven away from the positive electrode sheet 82. Then, the positive electrode sheet 82 is moved by the unwinding assembly 1 and the winding assembly, causing the area on the positive electrode sheet 82 that has undergone high-voltage pulses to leave the high-voltage pulse area, and causing the area on the positive electrode sheet 82 that has not undergone high-voltage pulses to enter the high-voltage pulse area, thus enabling the next high-voltage pulse operation. This improves processing efficiency.

[0020] Optionally, the positive electrode 82 is provided with a plurality of first opening areas, which are spaced apart along the length direction of the positive electrode 82. Each first opening area is provided with at least one first through hole 822, and all the first through holes 822 in each first opening area are arranged spaced apart along the width direction of the positive electrode 82. In this embodiment, the positive electrode 82 is divided into a plurality of processing units 821 along the length direction of the positive electrode 82, and each processing unit 821 is separated by a first opening area. That is, a processing unit 821 is provided between two adjacent first opening areas. During pulse operation, the first electrode plate 41 and the second electrode plate 42 are located between two adjacent first opening areas, and the first electrode plate 41 and the second electrode plate 42 perform high-voltage pulse operation on one processing unit 821. By setting a first opening area with a first through hole 822, the cross-sectional area of ​​the positive electrode 82 in the first opening area can be reduced, thereby increasing the resistance of the positive electrode 82 in the first opening area. This reduces the probability of current flowing through the first opening area into the adjacent processing unit 821, thereby reducing energy loss and ensuring the processing effect of the positive electrode 82 in the high-voltage pulse area during each high-voltage pulse operation. This allows the active material layer on the positive electrode 82 to be separated from the aluminum foil, realizing the separation and recycling of lithium materials from cobalt and other materials.

[0021] Optionally, the positive electrode 82 is provided with a plurality of second opening regions, which are spaced apart along the length of the positive electrode 82. At least one second opening region is provided between two adjacent first opening regions. That is, each processing unit 821 is provided with at least one second opening region. Figure 3 The processing unit 821 has three second opening regions, each including at least two second through holes 823. All the second through holes 823 in each second opening region are arranged at intervals along the width direction of the positive electrode 82. The cross-sectional area of ​​the positive electrode 82 in the first opening region is smaller than that in the second opening region. By setting the second opening regions, the cross-sectional area of ​​the positive electrode 82 in the second opening region can be reduced, thereby increasing the resistance of the positive electrode 82 in the second opening region, and thus reducing the probability of current flowing along the length direction of the positive electrode 82 in the processing unit 821. In this embodiment, the size of the area formed between two adjacent second opening regions (or the first opening region and the second opening region) is similar to the size of the small pieces described in the background art. This embodiment is equivalent to connecting multiple small pieces in parallel in the background art for unified processing.

[0022] Reference Figure 3 In this embodiment, two first through holes 822 are provided in the first opening area, and three second opening areas are provided in the processing unit 821. Each second opening area is provided with four second through holes 823. The length and width of the first through holes 822 are both greater than the length and width of the second through holes 823.

[0023] It should be noted that both the first through hole 822 and the second through hole 823 are spaced apart from the edge of the positive electrode plate 82. Understandably, the presence of the first through hole 822 and the second through hole 823 weakens the strength of the positive electrode plate 82. Spaced apart from the edge of the positive electrode plate 82 prevents the formation of gaps at its edge, thus preventing the positive electrode plate 82 from being torn during transport.

[0024] Reference Figure 4 The recycling and processing device also includes a punching assembly 7. Along the conveying direction of the positive electrode sheet 82, the punching assembly 7 is disposed between the unwinding assembly 1 and the high-voltage pulse zone. The punching assembly 7 includes a punching table 71 and a punch 72. The punching table 71 is used to support the positive electrode sheet 82. The punch 72 is disposed above the punching table 71 and can move in a vertical direction. The punch 72 is used to form a first through hole 822 and a second through hole 823 on the positive electrode sheet 82. By setting the punching assembly 7, the positive electrode 82 can be punched directly during the conveying process. That is, the first through hole 822 and the second through hole 823 can be punched directly on the positive electrode 82 during the conveying process. During the high-voltage pulse operation, the positive electrode 82 is stationary. It can be understood that during this time period, the positive electrode 82 located on the punching table 71 is also stationary. In this way, the punching operation can be carried out on the positive electrode 82 during the time period when the conveying of the positive electrode 82 is stopped during the pulse operation, which can improve the processing efficiency.

[0025] Reference Figure 5The punch 72 includes a mounting plate 721 that can move vertically. The mounting plate 721 has a first blade group 722 and N second blade groups 723. The N second blade groups 723 are arranged at intervals along the conveying direction of the positive electrode sheet 82. The first blade group 722 is used to form a first through hole 822 within a first opening area, and the second blade group 723 is used to form a second through hole 823 within a second opening area. On the positive electrode sheet 82, M second opening areas are provided between two adjacent first opening areas, where N = M. In this embodiment, N = M = 3. During the high-voltage pulse operation, the positive electrode 82 remains stationary. After the pulse operation is completed, the positive electrode 82 needs to move the length of one processing unit 821. It is understandable that during the punching operation, the positive electrode 82 also needs to remain stationary. The mounting plate 721 is provided with a first blade group 722 and multiple second blade groups 723, and the number of second blade groups 723 is consistent with the number of second opening areas in each processing unit 821. Therefore, during the time when the positive electrode 82 is stationary during the high-voltage pulse operation, the positive electrode 82 located in the punching assembly 7 can be punched. The punch 72 can form all the hole structures in the processing unit 821 in one punch. In this way, the stationary time of the high-voltage pulse operation and the stationary time of the punching operation can be overlapped, thereby improving the processing efficiency.

[0026] The first blade group 722 includes a plurality of first blade bodies 7221. The number of first blade bodies 7221 is consistent with the number of first through holes 822 in each first opening area. In this embodiment, two first through holes 822 are provided in each first opening area, and two first blade bodies 7221 are correspondingly provided in the first blade group 722. Correspondingly, the second blade group 723 includes a plurality of second blade bodies 7231. The number of second blade bodies 7231 is consistent with the number of second through holes 823 in each second opening area. In this embodiment, four second through holes 823 are provided in each second opening area, and four second blade bodies 7231 are correspondingly provided in the second blade group 723.

[0027] Optionally, the first electrode plate 41 and the second electrode plate 42 are arranged at intervals in the vertical direction, that is, within the high-voltage pulse region, the width direction of the positive electrode plate 82 is parallel to the vertical direction. In this embodiment, the first electrode plate 41 and the second electrode plate 42 need to continuously undergo high-voltage pulse operation. It is understood that after the high-voltage pulse ends, the active material on the positive electrode plate 82 will separate from the aluminum foil. The active material after detaching from the aluminum foil is in powder form. The powdered active material easily adheres to the first electrode plate 41 and the second electrode plate 42, resulting in a reduction in the effective contact area between the first electrode plate 41 and the second electrode plate 42 and the positive electrode plate 82. By setting the first electrode plate 41 and the second electrode plate 42 to be arranged at intervals in the vertical direction, the contact surface between the first electrode plate 41 and the second electrode plate 42 and the positive electrode plate 82 is a vertical surface. Under the influence of gravity, the powdered active material will fall downwards, reducing the amount of active material adhering to the first electrode plate 41 and the second electrode plate 42, ensuring effective contact between the first electrode plate 41 and the second electrode plate 42 and the positive electrode plate 82, avoiding the need for manual cleaning of the first electrode plate 41 and the second electrode plate 42 multiple times, thus enabling the high-voltage pulse operation to be carried out continuously and automatically, improving processing efficiency; by setting the width direction of the positive electrode plate 82 parallel to the vertical direction in the high-voltage pulse zone, the powdered active material will also fall downwards under the influence of gravity, so that the separated active material can be collected in the high-voltage pulse zone.

[0028] In this embodiment, the high-voltage pulse operation is performed in a liquid environment. A reaction tank 6 is provided within the high-voltage pulse zone, and a pulse assembly 4 is disposed within the reaction tank 6. A liquid medium 100 is also provided within the reaction tank 6. The winding lithium-ion battery positive electrode sheet 82 recycling and processing device further includes a first guide roller 2 and a second guide roller 3. The first guide roller 2 is disposed outside the reaction tank 6 and is horizontally arranged, while the second guide roller 3 is disposed inside the reaction tank 6 and is vertically arranged. The width direction of the positive electrode sheet 82 in the unwinding assembly 1 is parallel to the horizontal direction. The positive electrode sheet 82 unwound by the unwinding assembly 1 sequentially winds around the first guide roller 2 and the second guide roller 3 and enters the pulse assembly 4. By setting the first guide roller 2 and the second guide roller 3, the direction of the positive electrode sheet 82 can be guided. For example, the width direction of the positive electrode sheet 82 outside the high-voltage pulse zone is parallel to the horizontal direction, which facilitates the transportation and storage of the electrode sheet roll 81. After being guided by the first guide roller 2 and the second guide roller 3, the positive electrode sheet 82 undergoes... Figure 6 The twist shown makes the width direction of the positive electrode 82 in the high-voltage pulse region parallel to the vertical direction. Of course, the first guide roller 2 and the second guide roller 3 can also tension the positive electrode 82 to prevent it from bending during transport.

[0029] Of course, a tension roller can also be additionally set between the unwinding assembly 1 and the winding assembly along the conveying direction of the positive electrode 82.

[0030] Reference Figure 2 The first electrode plate 41 includes two first clamping plates 411, which are movable along the thickness direction of the positive electrode plate 82. The first clamping plates 411 are connected to the inner wall of the reaction tank 6 through a first electric push rod 43. The first electric push rod 43 drives the first clamping plates 411 to move so that the two first clamping plates 411 move closer to or further away from each other. The second electrode plate 42 includes two second clamping plates 421, which are movable along the thickness direction of the positive electrode plate 82. The second clamping plates 421 are connected to the inner wall of the reaction tank 6 through a second electric push rod. The second electric push rod drives the second clamping plates 421 to move so that the two second clamping plates 421 move closer to or further away from each other. By setting the first clamping plate 411 and the second clamping plate 421, the first clamping plate 411 and the second clamping plate 421 can clamp the positive electrode plate 82 respectively, thereby ensuring effective contact between the positive electrode plate 82 and the first electrode plate 41 and the second electrode plate 42; by setting the first electric push rod 43 and the second electric push rod, the first electric push rod 43 and the second electric push rod can drive the first clamping plate 411 and the second clamping plate 421 to move linearly respectively.

[0031] Reference Figure 1 A reaction tank 6 is provided in the high-voltage pulse zone, and a liquid medium 100 is provided in the reaction tank 6. The pulse component 4 is provided in the reaction tank 6 and is immersed in the liquid medium 100. The winding lithium-ion battery positive electrode sheet 82 recycling and processing device also includes a spray component 5. Along the conveying direction of the positive electrode sheet 82, the spray component 5 is provided between the high-voltage pulse zone and the winding component. The spray component 5 includes a nozzle 51, and the spraying direction of the nozzle 51 is directly opposite the liquid outlet position of the positive electrode sheet 82. It is understandable that during the process of transporting the positive electrode 82, the liquid medium 100 will form a water flow impact with the positive electrode 82, thereby causing the active material on the positive electrode 82 to detach. However, after the positive electrode 82 is twisted, there may still be active material powder remaining on the upward-facing side of the positive electrode 82. By setting the nozzle 51 and the spraying direction of the nozzle 51 is directly facing the liquid outlet position of the positive electrode 82, the upward-facing side of the positive electrode 82 can be sprayed and rinsed, so that the active material powder can be separated from the positive electrode 82 after the high-voltage pulse.

[0032] In one embodiment, the spray assembly 5 includes a spray pipe 52 and a pump body 53. One end of the spray pipe 52 is connected to the reaction tank 6, and the other end of the spray pipe 52 is provided with a nozzle 51. The pump body 53 is installed on the spray pipe 52. That is, the liquid sprayed by the nozzle 51 comes from the reaction tank 6, and the liquid medium 100 forms a circulation between the reaction tank 6, the spray pipe 52, the pump body 53 and the nozzle 51. In another embodiment, the nozzle 51 is connected to an external pipeline, and the reaction tank 6 is provided with a liquid outlet 61. That is, the nozzle 51 continuously sprays new liquid medium 100 into the reaction tank 6. The bottom of the reaction tank 6 is also provided with a liquid outlet 61 to prevent the liquid medium 100 in the reaction tank 6 from overflowing due to excessive liquid. A valve is also provided at the liquid outlet 61.

[0033] Reference Figure 1 In this embodiment, the spray assembly 5 includes a spray pipe 52 and a pump body 53. One end of the spray pipe 52 is connected to the reaction tank 6, and the other end of the spray pipe 52 is provided with a nozzle 51. The pump body 53 is provided on the spray pipe 52, and a reversing valve 54 is provided on the spray pipe 52. The reversing valve 54 is connected to an external pipeline. The bottom of the reaction tank 6 is also provided with a liquid outlet 61, and a valve is also provided at the liquid outlet 61. The reversing valve 54 can control the connection between the nozzle 51 and the pump body 53 or the external pipeline. In the initial stage of operation, when the amount of active substance powder mixed in the liquid medium 100 in the reaction tank 6 is small, the reversing valve 54 can be adjusted to connect the pump body 53 and the nozzle 51. The liquid sprayed by the nozzle 51 comes from the reaction tank 6, and the liquid medium 100 forms a circulation between the reaction tank 6, the spray pipe 52, the pump body 53 and the nozzle 51. When the amount of active substance powder mixed in the liquid medium 100 in the reaction tank 6 is large, the reversing valve 54 can be adjusted to connect the nozzle 51 to the external pipeline. The nozzle 51 continuously sprays new liquid medium 100 into the reaction tank 6 and opens the valve of the outlet 61. This can prevent the active substance powder from accumulating in the pump body 53 and the nozzle 51 and causing blockage. The liquid medium 100 discharged from the outlet 61 can be filtered and separated to collect the active substance powder, realizing the recovery of the active substance powder.

[0034] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings, and are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0035] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0037] The technical principles of this application have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this application. Based on this explanation, those skilled in the art can conceive of other specific embodiments of this application without creative effort, and these embodiments will all fall within the protection scope of this application.

Claims

1. A device for recycling and processing wound lithium-ion battery positive electrode sheets, characterized in that, The assembly includes an unwinding component (1), a winding component, and a pulse component (4). The unwinding component (1) controls the unwinding length of the positive electrode sheet (82) to be processed. The winding component collects the processed positive electrode sheet (82) along the conveying direction of the positive electrode sheet (82). A high-voltage pulse zone is provided between the unwinding component (1) and the winding component. The pulse component (4) is located within the high-voltage pulse zone. The pulse component (4) includes a first electrode plate (41) and a second electrode plate (42). The first electrode plate (41) and the second electrode plate (42) are arranged at intervals along the width direction of the positive electrode sheet (82). Both the first electrode plate (41) and the second electrode plate (42) can move along the direction perpendicular to the thickness of the positive electrode sheet (82) so that the first electrode plate (41) and the second electrode plate (42) selectively abut against the edge of the positive electrode sheet (82).

2. The wound lithium-ion battery positive electrode recycling and processing device according to claim 1, wherein, The positive electrode (82) is provided with a plurality of first opening areas, the plurality of first opening areas are spaced apart along the length direction of the positive electrode (82), each first opening area is provided with at least one first through hole (822), and all the first through holes (822) in each first opening area are spaced apart along the width direction of the positive electrode (82). During pulse operation, the first electrode plate (41) and the second electrode plate (42) are located between two adjacent first opening areas.

3. The wound lithium-ion battery positive electrode recycling and processing device according to claim 2, wherein, The positive electrode (82) is provided with a plurality of second opening areas, which are spaced apart along the length direction of the positive electrode (82). At least one second opening area is provided between two adjacent first opening areas. Each second opening area includes at least two second through holes (823). All the second through holes (823) in each second opening area are arranged at intervals along the width direction of the positive electrode (82). The cross-sectional area of ​​the positive electrode (82) in the first opening area is smaller than the cross-sectional area of ​​the positive electrode (82) in the second opening area.

4. The wound lithium-ion battery positive electrode recycling and processing device according to claim 3 further includes a punching assembly (7), which is disposed between the unwinding assembly (1) and the high-voltage pulse zone along the conveying direction of the positive electrode (82). The punching assembly (7) includes a punching platform (71) and a punch (72). The punching platform (71) is used to carry the positive electrode (82). The punch (72) is disposed above the punching platform (71). The punch (72) can move in the vertical direction. The punch (72) is used to form the first through hole (822) and the second through hole (823) on the positive electrode (82).

5. The wound lithium-ion battery positive electrode recycling and processing device according to claim 4, wherein, The punch (72) includes a mounting plate (721) that can move vertically. The mounting plate (721) is provided with a first blade group (722) and N second blade groups (723). The N second blade groups (723) are arranged at intervals along the conveying direction of the positive electrode (82). The first blade group (722) is used to form the first through hole (822) in the first opening area. The second blade group (723) is used to form the second through hole (823) in the second opening area. On the positive electrode (82), M second opening areas are provided between two adjacent first opening areas, where N = M.

6. The wound lithium-ion battery positive electrode recycling and processing device according to claim 3, wherein, Both the first through hole (822) and the second through hole (823) are spaced apart from the edge of the positive electrode (82).

7. The wound lithium-ion battery positive electrode recycling and processing device according to any one of claims 1-6, wherein, The first electrode plate (41) and the second electrode plate (42) are arranged at intervals along the vertical direction.

8. The wound lithium-ion battery positive electrode recycling and processing device according to claim 7, wherein, A reaction tank (6) is provided within the high-voltage pulse zone, and the pulse assembly (4) is disposed within the reaction tank (6). A liquid medium (100) is also provided within the reaction tank (6). The wound lithium-ion battery positive electrode recycling device further includes a first guide roller (2) and a second guide roller (3). The first guide roller (2) is arranged outside the reaction tank (6) and is horizontally arranged. The second guide roller (3) is arranged inside the reaction tank (6) and is vertically arranged. The width direction of the positive electrode (82) in the unwinding assembly (1) is parallel to the horizontal direction. The positive electrode (82) unwound by the unwinding assembly (1) enters the pulse assembly (4) in sequence around the first guide roller (2) and the second guide roller (3).

9. The wound lithium-ion battery positive electrode recycling and processing apparatus according to any one of claims 1-6, wherein, A reaction tank (6) is provided within the high-voltage pulse zone, and the pulse assembly (4) is disposed within the reaction tank (6). The first electrode plate (41) includes two first clamping plates (411), at least one of the first clamping plates (411) is movable along the thickness direction of the positive electrode plate (82), the movable first clamping plate (411) is connected to the inner wall of the reaction tank (6) through a first electric push rod (43), the first electric push rod (43) drives the movable first clamping plate (411) to move so that the two first clamping plates (411) move closer to or further away from each other; And / or, The second electrode plate (42) includes two second clamping plates (421). At least one of the second clamping plates (421) is movable along the thickness direction of the positive electrode plate (82). The movable second clamping plate (421) is connected to the inner wall of the reaction tank (6) through a second electric push rod. The second electric push rod drives the movable second clamping plate (421) to move so that the two second clamping plates (421) move closer to or further away from each other.

10. The wound lithium-ion battery positive electrode recycling and processing apparatus according to any one of claims 1-6, wherein, A reaction tank (6) is provided in the high-voltage pulse zone, and a liquid medium (100) is provided in the reaction tank (6). The pulse assembly (4) is disposed in the reaction tank (6) and is immersed in the liquid medium (100). The wound lithium-ion battery positive electrode recycling and processing device further includes a spray assembly (5). Along the conveying direction of the positive electrode (82), the spray assembly (5) is disposed between the high-voltage pulse zone and the winding assembly. The spray assembly (5) includes a nozzle (51), and the spraying direction of the nozzle (51) is directly opposite the liquid outlet position of the positive electrode (82).

11. The wound lithium-ion battery positive electrode recycling and processing device according to claim 10, wherein, The spray assembly (5) includes a spray pipe (52) and a pump body (53). One end of the spray pipe (52) is connected to the reaction tank (6), and the other end of the spray pipe (52) is provided with the nozzle (51). The pump body (53) is mounted on the spray pipe (52); and / or, The nozzle (51) is connected to an external pipeline, and the reaction tank (6) is provided with a liquid outlet (61).

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